drm: cleanup: drm_modeset_lock_all_ctx() --> DRM_MODESET_LOCK_ALL_BEGIN()

As requested in Documentation/gpu/todo.rst, replace the boilerplate code
surrounding drm_modeset_lock_all_ctx() with DRM_MODESET_LOCK_ALL_BEGIN()
and DRM_MODESET_LOCK_ALL_END()

Signed-off-by: Fernando Ramos <greenfoo@u92.eu>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210924064324.229457-2-greenfoo@u92.eu

diff --git a/drivers/gpu/drm/drm_client_modeset.c b/drivers/gpu/drm/drm_client_modeset.c
index ced09c7..5f5184f 100644 (file)
--- a/drivers/gpu/drm/drm_client_modeset.c
+++ b/drivers/gpu/drm/drm_client_modeset.c
@@ -574,6 +574,7 @@ static bool drm_client_firmware_config(struct drm_client_dev *client,
        int num_connectors_detected = 0;
        int num_tiled_conns = 0;
        struct drm_modeset_acquire_ctx ctx;
+       int err;
 
        if (!drm_drv_uses_atomic_modeset(dev))
                return false;
@@ -585,10 +586,7 @@ static bool drm_client_firmware_config(struct drm_client_dev *client,
        if (!save_enabled)
                return false;
 
-       drm_modeset_acquire_init(&ctx, 0);
-
-       while (drm_modeset_lock_all_ctx(dev, &ctx) != 0)
-               drm_modeset_backoff(&ctx);
+       DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, err);
 
        memcpy(save_enabled, enabled, count);
        mask = GENMASK(count - 1, 0);
@@ -743,8 +741,7 @@ bail:
                ret = false;
        }
 
-       drm_modeset_drop_locks(&ctx);
-       drm_modeset_acquire_fini(&ctx);
+       DRM_MODESET_LOCK_ALL_END(dev, ctx, err);
 
        kfree(save_enabled);
        return ret;